<!DOCTYPE html>
<html lang="zh-CN">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <form action="./按钮.html">
    <input type="text" name="username">

    <!-- button: 普通按钮 -->
    <input type="button" value="按钮">
    <!-- reset: 重置表单按钮 -->
    <input type="reset">
    <!-- submit: 提交表单按钮 -->
    <input type="submit">
  </form>
</body>

</html>